Autel MaxiIM series adds Mercedes Benz FBS4 ECM clone and renew function in Nov. 2023. Check update information here. Autel IM508 IM608 Adds Mercedes FBS4 ECU Cloning and Renewal It is a FBS4 system, it is not FBS3, we cannot … Continue reading How to Clone Mercedes FBS4 ECU with Autel IM608 Gbox3?